By which method was a new breed ‘Hisardale’ of sheep formed by using Bikaneri ewes and Marino rams?

Crossbreeding: The mating of animals belonging to different breeds is called cross-breeding. It involves interbreeding of superior males of a breed with superior females of another breed to produce hybrid animals.

E.g. Bikaneri ewes were cross-breed with Marino rams to produce hybrid Hisardale.